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A kind of preparation method of organosilicon defoamer

A silicone defoamer and preservative technology, applied in the direction of foam dispersion/prevention, can solve the problems of unfavorable popularization, high production cost, complicated process flow, etc., and achieves good appearance, fast defoaming speed, and simple process. Effect

Active Publication Date: 2016-01-20
扬州晨化新材料股份有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

But the technological process of above these bibliographical reports is more complicated, the cost of production is higher, operation is not easy, is unfavorable for popularizing and using

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] Add 5kg of simethicone oil 201 that has been treated in advance into a clean reactor, control the speed at 1200 rpm, heat up to 50-60°C and stir for 10 minutes; add 0.05kg of white carbon black, and keep the temperature at 50-60°C Stir for 10 minutes to make the two materials fully uniform; then add 3kg of emulsifier (0.5kgT-60, 1.5kgS-40, 1kgCGF), keep stirring at a temperature of 50-60°C for 15 minutes; then within 50 minutes, dropwise add 92kg of Ionized water (add an appropriate amount of 10% CaCl to the water 2 solution), at a temperature of 55±5°C and a speed of 1200 rpm, perform phase inversion (start adding slowly, and increase the rate of addition after phase inversion), after the drop, keep the temperature at 60-70°C and continue stirring for 10 minutes ; Cool down to 30°C, adjust the rotating speed to 900 rpm, and stir for 10 minutes; then raise the temperature to 40°C, adjust the rotating speed to 1200 rpm, and add 0.3kg of preservative formaldehyde within 3...

Embodiment 2

[0024] Add 10kg of pre-treated simethicone oil 203 into a clean reactor, control the speed at 1200 rpm, heat up to 60-70°C and stir for 10 minutes; add 0.15kg of white carbon black, and keep the temperature at 60-70°C Stir for 10 minutes to make the two materials fully uniform; then add 4kg of emulsifier (1kgT-60, 1kg polyether silicone oil CGF), keep stirring at a temperature of 60-70°C for 15 minutes; then add 85kg of deionized water dropwise within 50 minutes (Add an appropriate amount of 10% CaCl to the water 2 solution), at a temperature of 55±5°C and a rotation speed of 1200 rpm, perform phase inversion (start adding slowly, and increase the rate of addition after the phase inversion), after dropping, keep the temperature at 50-60°C and continue stirring for 10 minutes ; Cool down to 30°C, adjust the rotating speed to 900 rpm, and stir for 10 minutes; then raise the temperature to 40°C, adjust the rotating speed to 1200 rpm, and add 0.5kg of preservative nitrous acid wit...

Embodiment 3

[0026] Add 7kg of simethicone oil 205 that has been treated in advance into a clean reactor, control the speed at 1200 rpm, raise the temperature to 60-70°C and stir for 10 minutes; add 0.12kg of white carbon black, and keep the temperature at 60-70°C Stir for 10 minutes to make the two materials fully uniform; then add 3kg of emulsifier (polyether silicone oil CGF), keep stirring at 60-70°C for 15 minutes; then add 90kg of deionized water dropwise within 50 minutes (add an appropriate amount of 10%CaCl 2 solution), at a temperature of 55±5°C and a speed of 1200 rpm, perform phase inversion (start adding slowly, and increase the rate of addition after phase inversion), after the drop, keep the temperature at 60-70°C and continue stirring for 10 minutes ; Cool down to 30°C, adjust the rotating speed to 900 rpm, and stir for 10 minutes; then raise the temperature to 40°C, adjust the rotating speed to 1200 rpm, and add 0.4kg of preservative sodium benzoate within 3-5 minutes ; F...

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PUM

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Abstract

The invention provides a preparation method of an organic silicon defoamer, and relates to the field of a production technology of fine chemical products. The organic silicon defoamer is stable emulsion formed by carrying out emulsification processing on components such as simethicone and a nonionic surface active agent under specified conditions. The prepared organic silicon defoamer has the characteristics of being high in defoaming speed, high in foam inhibition capability, non-toxic, good in adaptability, less in dosage, simple in technology, etc.

Description

technical field [0001] The invention relates to the technical field of production of fine chemical products, in particular to a production method of an organosilicon defoamer. Background technique [0002] Defoamer is a surfactant used to suppress and eliminate various harmful foams. It is the most effective chemical method to control foam. It is widely used in chemical industry, medicine, textile, printing and dyeing, mineral processing, coating and sewage treatment and other fields. Foam in industrial production will bring harm such as reduced production capacity, waste of raw materials, and reduced quality, which will adversely affect production. [0003] Silicone defoamer is emulsified by mechanical stirring with silicone oil, emulsifier, thickener and appropriate amount of water. Silicone defoamers are widely used because of the following characteristics: ①It has good chemical inertness, and generally does not chemically react with the medium to be defoamed; Spread ou...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01D19/04
Inventor 房连顺董晓红管丹邵春明
Owner 扬州晨化新材料股份有限公司
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